Updated to ESLint config 5.4.0

package.json

@@ -63,7 +63,7 @@
     "@rollup/plugin-sucrase": "^3.0.0",
     "@rollup/plugin-typescript": "^2.0.1",
     "@rollup/plugin-virtual": "^2.0.0",
-    "@sveltejs/eslint-config": "github:sveltejs/eslint-config#v5.2.0",
+    "@sveltejs/eslint-config": "github:sveltejs/eslint-config#v5.4.0",
     "@types/mocha": "^7.0.0",
     "@types/node": "^8.10.53",
     "@typescript-eslint/eslint-plugin": "^3.0.2",

test/runtime/samples/this-in-function-expressions/_config.js

@@ -1,6 +1,6 @@
 export default {
 	async test({ assert, target, window }) {
-		const [_, btn] = target.querySelectorAll('button');
+		const [, btn] = target.querySelectorAll('button');
 		const clickEvent = new window.MouseEvent('click');
 
 		await btn.dispatchEvent(clickEvent);